Analytical study on the performance of reinforced high-strength concrete bridge columns

2008 ◽  
Author(s):  
J Choi ◽  
H Lee ◽  
D Seong ◽  
M Oh ◽  
H Shin
Keyword(s):  
High Strength Concrete ◽  
Analytical Study ◽  
High Strength ◽  
Bridge Columns ◽  
Concrete Bridge ◽  
Strength Concrete

Analysis of Equivalent Plastic Hinge Length of High Strength Concrete Bridge Columns by Using High Strength Reinforcements

2011 ◽  
Vol 90-93 ◽  
pp. 1144-1148 ◽  
Author(s):  
Yong Duo Liang ◽  
Zhi Guo Sun ◽  
Gong Cai Chi ◽  
Bing Jun Si
Keyword(s):  
High Strength Concrete ◽  
Plastic Hinge ◽  
Influence Factors ◽  
Load Ratio ◽  
High Strength ◽  
Bridge Columns ◽  
Concrete Bridge ◽  
Test Results ◽  
Strength Concrete ◽  
Plastic Hinge Length

The use of high strength reinforcement and high strength concrete in bridge columns is increasing due to many advantages of the high strength materials. In order to study the equivalent plastic hinge length of reinforced concrete bridge columns，37 column test results by using high strength reinforcement and high concrete were collected. Then, the equations proposed by Priestley, Paulay, Telemachos and JTG/T B02-01-2008 to predict the equivalent plastic hinge length of the columns were evaluated based on the experimental results. Influence factors which affect the equivalent plastic hinge length of high strength concrete bridge columns were studied through grey correlation analysis. It is found that, comparing to test results, all the proposed equations show considerable scatter in estimating the plastic hinge length of the high strength bridge columns using high strength reinforcement. The equations proposed by Paulay, Telemachos are not safe, while Priestley and JTG/T B02-01-2008 proposed equations give conservative results. Among the influence factors, the diameter of longitudinal reinforcement is the most important, secondly is the column length and section width. The axial load ratio of the column and transverse reinforcement of the specimens show small influence.

scholarly journals Inelastic Performance of High-Strength Concrete Bridge Columns under Earthquake Loads

2011 ◽  
Vol 9 (2) ◽  
pp. 205-220 ◽  
Author(s):  
DaiJeong Seong ◽  
TaeHoon Kim ◽  
MyungSeok Oh ◽  
HyunMock Shin
Keyword(s):  
High Strength Concrete ◽  
High Strength ◽  
Bridge Columns ◽  
Concrete Bridge ◽  
Earthquake Loads ◽  
Strength Concrete

Blast Behavior of Columns Built with High-Strength Concrete and Grade 690 MPa High-Strength Reinforcement

2020 ◽  
Author(s):  
Amer Hammoud ◽  
Junbo Yan ◽  
Yang Li ◽  
Hassan Aoude
Keyword(s):  
High Strength Concrete ◽  
Analytical Study ◽  
Blast Resistance ◽  
Concrete Strength ◽  
High Strength ◽  
Strength Concrete ◽  
Steel Ratio ◽  
Blast Response ◽  
Sdof Analysis ◽  
Blast Performance

As part of this study a series of columns built with high-strength concrete (HSC) and Grade 690 MPa high-strength reinforcement are tested under blast loads using a shock-tube. The performance of the columns is compared to a set of columns specimens built with Grade 400 MPa reinforcement. In addition to the effects of concrete and steel type, the effects of longitudinal steel ratio and seismic detailing are also investigated. The results show that concrete strength has limited effects on blast behavior. Conversely, use of high-strength bars significantly enhances column blast performance by reducing displacements and increasing blast resistance, with an ability to reduce reinforcement. The results further demonstrate that increasing the longitudinal steel ratio and seismic detailing improve the blast behavior of columns built with conventional and high-strength bars. As part of the analytical study the blast response of the columns is predicted using SDOF analysis and finite element modelling.

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